JPH0393733U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例に係る液面計の原理
図、第２図は上記一実施例の電気ヒータ棒の説明
図、第３図は第２図の−矢視図、第４図は上
記一実施例の温度計が検出する温度の説明図、第
５図は液槽内の温度分布の説明図、第６図は従来
の液面計の説明図である。 ２……電気ヒータ棒、３ａ〜３ｄ……温度計、
６……スイツチング回路、８ａ〜８ｄ……微分回
路、９……時間設定器、１０……比較回路、１１
……設定器、１２……表示器。 Fig. 1 is a principle diagram of a liquid level gauge according to an embodiment of the present invention, Fig. 2 is an explanatory diagram of an electric heater rod of the above-mentioned embodiment, Fig. 3 is a view taken along the - arrow in Fig. 2, and Fig. 4 FIG. 5 is an explanatory diagram of the temperature detected by the thermometer of the above embodiment, FIG. 5 is an explanatory diagram of the temperature distribution in the liquid tank, and FIG. 6 is an explanatory diagram of a conventional liquid level gauge. 2...Electric heater rod, 3a-3d...Thermometer,
6...Switching circuit, 8a to 8d...Differential circuit, 9...Time setting device, 10...Comparison circuit, 11
...Setting device, 12...Display device.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 側面長手方向に複数個の温度計が配設された電
気ヒータ棒、同電気ヒータ棒に接続され所定の時
間間隔で電力を供給するスイツチング回路、上記
温度計が微分回路を介して接続された比較回路、
および同比較回路が接続された表示器を備えたこ
とを特徴とする液面計。 Comparison of an electric heater rod with multiple thermometers arranged in the longitudinal direction of the side surface, a switching circuit connected to the electric heater rod and supplying power at predetermined time intervals, and a comparison in which the above thermometers are connected via a differential circuit. circuit,
A liquid level gauge characterized by comprising a display connected to the same comparison circuit.